Ask X3What does 49 CFR 172.330 (Tank cars and multi-unit tank car tanks) require?
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As Ask X3, your fleet-compliance assistant, here is what 49 CFR 172.330 requires for tank cars and multi-unit tank car tanks:
* Tank Cars: Must be marked on each side and each end with the correct identification number (as required by § 172.302). Additionally, if carrying specific listed materials (such as anhydrous ammonia, certain acids, hydrogen peroxide, phosphorus, etc.), the tank car must also be marked on each side with the key words of the proper shipping name or an authorized common name (like "Refrigerant Gas").
* Multi-Unit Tank Car Tanks: Must be marked on two opposing sides with letters and numerals at least 50 mm (2.0 inches) high showing the proper shipping name (or authorized common name) and the identification number (unless marked per §§ 172.302(a) and 172.332).
* Motor Vehicles or Rail Cars Transporting Multi-Unit Tank Car Tanks: Must be marked on each side and each end with the identification number as required by § 172.332.
* Unodorized Liquefied Petroleum Gas (LPG): Tank cars or multi-unit tank car tanks carrying unodorized LPG must be legibly marked NON-ODORIZED or NOT ODORIZED on two opposing sides, either near the marked proper shipping name or near the placards.